EP 0841759 B1 20050126 - Calibration method of base station transmission equipped with a multi-element antenna
Title (en)
Calibration method of base station transmission equipped with a multi-element antenna
Title (de)
Eichungsverfahren für Basisstationssendungen ausgerüstet mit einer Mehrelementantenne
Title (fr)
Procédé de calibration d'émission d'une station de base équipée d'une antenne à plusieurs capteurs
Publication
Application
Priority
FR 9613597 A 19961107
Abstract (en)
[origin: EP0841759A1] The method involves producing, before transmission, a reception calibration table for each carrier frequency which represents the different contributions from different reception sensors in the transmission direction. For each carrier transmission frequency, a transmission calibration table is formed to represent the different contributions from the different sensors. A frequency transposition operator is calculated which is used to transform a reception table into a transmission table. Statistical data are calculated on transmission for a number of signal frame samples for different interference signals received from different sensors. An optimal spatial weighting is determined for the frequency transposition operator statistical data and a criteria for strengthening the useful signal and attenuating interference is determined. The contributions to the digital signal from the different sensors are weighted and transmitted, using the weightings obtained for the optimal spatial weighting.
IPC 1-7
IPC 8 full level
H01Q 3/26 (2006.01); H04B 7/06 (2006.01); H04B 7/26 (2006.01); H04W 16/24 (2009.01); H04W 16/28 (2009.01); H04W 88/14 (2009.01)
CPC (source: EP US)
H04B 7/0615 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
EP 0841759 A1 19980513; EP 0841759 B1 20050126; DE 69732335 D1 20050303; DE 69732335 T2 20051027; ES 2235221 T3 20050701; FR 2755565 A1 19980507; FR 2755565 B1 19990108; JP 4087483 B2 20080521; JP H10247875 A 19980914; US 6021334 A 20000201
DOCDB simple family (application)
EP 97402659 A 19971106; DE 69732335 T 19971106; ES 97402659 T 19971106; FR 9613597 A 19961107; JP 34356097 A 19971107; US 96550197 A 19971106